CN103586399A - Molding sand capable of quick air permeation and heat dissipation and preparation method thereof - Google Patents
Molding sand capable of quick air permeation and heat dissipation and preparation method thereof Download PDFInfo
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- CN103586399A CN103586399A CN201310483666.2A CN201310483666A CN103586399A CN 103586399 A CN103586399 A CN 103586399A CN 201310483666 A CN201310483666 A CN 201310483666A CN 103586399 A CN103586399 A CN 103586399A
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Abstract
The invention relates to a molding sand capable of quick air permeation and heat dissipation, which is prepared from the following raw materials in parts by weight: 100-120 parts of return sand, 140-150 parts of quartz sand, 30-40 parts of dry coal ash, 50-60 parts of vitrified microbead, 14-20 parts of hydroxyl-aluminum pillared bentonite, 1-2 parts of sodium carboxymethyl cellulose, 20-25 parts of starch, 2-3 parts of raw tung oil, 1-2 parts of lime powder, 4-5 parts of calcium fluoride, 4-5 parts of aluminum nitride, 40-45 parts of haydite, 4-5 parts of cement and a right amount of water. The return sand, quartz sand and the like are calcined, pulverized and subjected to high-temperature calcination, and the sodium carboxymethyl cellulose and other assistants are dispersed and ground, so that the molding sand has excellent smoothness, binding property, toughness and plasticity; the vitrified microbeads are utilized to greatly enhance the air permeability and reduce the subsurface porosity; the starch is utilized to enhance the collapsibility; and the aluminum nitride is utilized to increase the heat conductivity and enhance the production efficiency.
Description
Technical field
The present invention relates to a kind of casting field, relate in particular to a kind of ventilative heat radiation molding sand and preparation method thereof fast.
Background technology
Molding sand is in casting, to be used for the material of moulding.Molding sand is generally mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things, also available natural silica sand argillaceous, the sand formulation Sand particle diameter that common cast aluminium is used is too large or too little, molding sand material footpath is too large, although gas permeability is better, aloxite part surface ratio is more coarse, fineness is bad, molding sand material footpath is too little, causes sand mold gas permeability bad, and aluminium casting has pore to produce.Domestic and international widely used coal dust clay green-sand, generally by the mixed system of roughing sand, binding agent, coal dust additive etc. and water, formed, there is certain anti-scab effect and the cost of material is low, production efficiency is high, but its consumption is large, discharge is serious, at casting process coal dust firing, decompose and produce toxic gas and pollute.
Molding sand is different by binding agent used, can be divided into clay-bonded sand, water-glass sand, cement bonded sand, quartz sand etc., and that with clay-bonded sand, water-glass sand and quartz sand, uses is maximum.The effect of molding sand in Foundry Production is very important, and the casting wasted product causing because of the poor quality of molding sand accounts for 30～50% of the total waste product of foundry goods.Conventionally to the requirement of molding sand, be: 1, there is higher intensity and heat endurance, to bear the effect of various external force and high temperature.2, good mobility, the ability that molding sand mutually moves between sand grains under external force or Action of Gravity Field own.3, certain plasticity, molding sand is out of shape under external force, can keep the ability of the shape that gives after external force is removed.4, good gas permeability, molding sand hole sees through the ability of gas.5, high collapsibility, weighs up again grittiness, and after casting solidification, whether molding sand easily destroys, the performance of whether easily removing from foundry goods.
Current casting field development rapidly, higher for the performance requirement of steel-casting and ironcasting, thereby require further to promote the performance of molding sand.
Summary of the invention
The object of the present invention is to provide a kind of fast ventilative heat radiation molding sand and preparation method thereof, this molding sand has high gas permeability, collapsibility is good, heat conduction is fast feature.
Technical scheme of the present invention is as follows:
A ventilative heat radiation molding sand, is characterized in that being made by the raw material of following weight portion: return sand 100-120, quartz sand 140-150, dry powder coal ash 30-40, glass bead 50-60, hydroxyl-aluminum pillared bentonite 14-20, sodium carboxymethylcellulose 1-2, starch 20-25, raw tung oil 2-3, pulverized limestone 1-2, calcirm-fluoride 4-5, aluminium nitride 4-5, haydite 40-45, cement 4-5, water are appropriate;
The described preparation method of ventilative heat radiation molding sand fast, it is characterized in that comprising the following steps: return sand, quartz sand, hydroxy aluminum pillared bentonite, haydite mixed powder are broken into 100-200 order powder, then add sodium carboxymethylcellulose, starch, raw tung oil, suitable quantity of water, dispersed with stirring, pugging, send in 1440-1460 ℃ of calcining furnace and calcine 4-5 hour, take out and be crushed to 50-100 order, obtain calcining material; Mix with other residual components, add and be equivalent to water wet mixing 10-15 minute of compound weight 3-5% and get final product.
Beneficial effect of the present invention
The present invention has used return sand, quartz sand etc., through high-temperature calcination, in conjunction with adding the auxiliary agent dispersion grinding such as sodium carboxymethylcellulose, makes molding sand have excellent smoothness, caking property, toughness, plasticity; By using glass bead, greatly increased gas permeability, reduce subcutaneous blowhole phenomenon; By using starch, improved collapsibility; By using aluminium nitride, increased thermal conductivity, improved production efficiency.
The specific embodiment
A ventilative heat radiation molding sand, by following weight portion (kilogram) raw material make: return sand 110, quartz sand 145, dry powder coal ash 35, glass bead 55, hydroxyl-aluminum pillared bentonite 17, sodium carboxymethylcellulose 1.5, starch 23, raw tung oil 2.5, pulverized limestone 1.5, calcirm-fluoride 4.6, aluminium nitride 4.5, haydite 42, cement 4.5, water are appropriate;
The described preparation method of ventilative heat radiation molding sand fast, comprise the following steps: return sand, quartz sand, hydroxy aluminum pillared bentonite, haydite mixed powder are broken into 140 order powder, then add sodium carboxymethylcellulose, starch, raw tung oil, suitable quantity of water, dispersed with stirring, pugging, send in 1450 ℃ of calcining furnaces and calcine 4.5 hours, take out and be crushed to 80 orders, obtain calcining material; Mix with other residual components, add and be equivalent to the water wet mixing 13 minutes of compound weight 4% and get final product.
The processing performance of the molding sand that the present invention makes:
Green compression strength: 0.121Mpa, air penetrability: 123%, hot green tensile strength: 408Kpa, shatter index: 86%.
Claims (2)
1. a quick ventilative heat radiation molding sand, is characterized in that being made by the raw material of following weight portion: return sand 100-120, quartz sand 140-150, dry powder coal ash 30-40, glass bead 50-60, hydroxyl-aluminum pillared bentonite 14-20, sodium carboxymethylcellulose 1-2, starch 20-25, raw tung oil 2-3, pulverized limestone 1-2, calcirm-fluoride 4-5, aluminium nitride 4-5, haydite 40-45, cement 4-5, water are appropriate.
2. the quick preparation method of ventilative heat radiation molding sand according to claim 1, it is characterized in that comprising the following steps: return sand, quartz sand, hydroxy aluminum pillared bentonite, haydite mixed powder are broken into 100-200 order powder, then add sodium carboxymethylcellulose, starch, raw tung oil, suitable quantity of water, dispersed with stirring, pugging, send in 1440-1460 ℃ of calcining furnace and calcine 4-5 hour, take out and be crushed to 50-100 order, obtain calcining material; Mix with other residual components, add and be equivalent to water wet mixing 10-15 minute of compound weight 3-5% and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310483666.2A CN103586399A (en) | 2013-10-16 | 2013-10-16 | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310483666.2A CN103586399A (en) | 2013-10-16 | 2013-10-16 | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof |
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| CN103586399A true CN103586399A (en) | 2014-02-19 |
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| CN201310483666.2A Pending CN103586399A (en) | 2013-10-16 | 2013-10-16 | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174809A (en) * | 2014-08-22 | 2014-12-03 | 合肥江淮铸造有限责任公司 | Recyclable casting molding sand with good air permeability and preparation method of sand |
| CN104226889A (en) * | 2014-09-24 | 2014-12-24 | 河南省西峡汽车水泵股份有限公司 | Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand |
| CN104525837A (en) * | 2014-12-01 | 2015-04-22 | 繁昌县恒鑫汽车零部件有限公司 | Manual molding sand for gray cast iron large pieces and preparation method thereof |
| CN105170877A (en) * | 2015-09-15 | 2015-12-23 | 蚌埠冠宜型材科技有限公司 | Molding sand for casting |
| CN105170872A (en) * | 2015-08-19 | 2015-12-23 | 合肥市田源精铸有限公司 | Novel molding sand |
| CN105414461A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand |
| CN105414466A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Composite modified sodium silicate-bonded sand easy to shape and scatter for pump valve castings and preparation method of composite modified sodium silicate-bonded sand |
| CN105414462A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-lubricating non-stick composite modified sodium silicate sand for pump valve casting and preparation method thereof |
| CN105414468A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability composite modified sodium silicate-bonded sand easy to strip for pump valve castings and preparation method of high-permeability composite modified sodium silicate-bonded sand |
| CN105414470A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Enhanced type composite modified sodium silicate sand for pump valve casting and preparing method thereof |
| CN105414463A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Heat-shock resistant efficient composite modified sodium silicate sand for pump valve casting and preparation method thereof |
| CN105414469A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Easily-demolding composite modified sodium silicate sand used for pump valve casting and preparing method thereof |
| CN105414467A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Composite modified sodium silicate-bonded sand fast to solidify for pump valve castings and preparation method of composite modified sodium silicate-bonded sand |
| CN105436394A (en) * | 2015-11-25 | 2016-03-30 | 铜陵市经纬流体科技有限公司 | Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand |
| CN105436395A (en) * | 2015-11-25 | 2016-03-30 | 铜陵市经纬流体科技有限公司 | High-bonding-strength modified water glass sand for pump valve casting and manufacturing method of high-bonding-strength modified water glass sand |
| CN105921681A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for small steel castings and preparing method thereof |
| CN105921680A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand for casting gray cast iron flywheel and preparing method thereof |
| CN107214291A (en) * | 2017-04-18 | 2017-09-29 | 芜湖市和蓄机械股份有限公司 | A kind of high temperature resistant, casting sand of high intensity and preparation method thereof |
| CN116117071A (en) * | 2022-12-27 | 2023-05-16 | 安徽华聚新材料有限公司 | Molding sand capable of preventing air holes from being formed and preparation method thereof |
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| CN103223751A (en) * | 2013-03-14 | 2013-07-31 | 南京工业大学 | Heat-insulation flexible face brick and making method thereof |
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| GB1273203A (en) * | 1968-07-31 | 1972-05-03 | Buderus Eisenwerk | Foundry moulding sand |
| CN1158769A (en) * | 1995-11-08 | 1997-09-10 | 花王株式会社 | Mould manufacturing method, mould composition and binding agent composition for moulds |
| US5992499A (en) * | 1997-05-09 | 1999-11-30 | Air Products And Chemicals, Inc. | Method for cold reclamation of foundry sand containing clay |
| CN101222992A (en) * | 2005-07-15 | 2008-07-16 | 株式会社小松制作所 | Resin-coated sand for use in cast steel, casting mold made of the sand, steel casting casted using the casting mold |
| US20100269998A1 (en) * | 2009-02-02 | 2010-10-28 | Charles Landis | Modified Bentonites for Advanced Foundry Applications |
| CN103042162A (en) * | 2012-12-25 | 2013-04-17 | 马鞍山市万鑫铸造有限公司 | Argil contained moulding sand and preparation method thereof |
| CN103223751A (en) * | 2013-03-14 | 2013-07-31 | 南京工业大学 | Heat-insulation flexible face brick and making method thereof |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174809B (en) * | 2014-08-22 | 2016-07-06 | 合肥江淮铸造有限责任公司 | A kind of recyclable good permeability casting sand and preparation method thereof |
| CN104174809A (en) * | 2014-08-22 | 2014-12-03 | 合肥江淮铸造有限责任公司 | Recyclable casting molding sand with good air permeability and preparation method of sand |
| CN104226889A (en) * | 2014-09-24 | 2014-12-24 | 河南省西峡汽车水泵股份有限公司 | Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand |
| CN104525837A (en) * | 2014-12-01 | 2015-04-22 | 繁昌县恒鑫汽车零部件有限公司 | Manual molding sand for gray cast iron large pieces and preparation method thereof |
| CN105170872A (en) * | 2015-08-19 | 2015-12-23 | 合肥市田源精铸有限公司 | Novel molding sand |
| CN105170877A (en) * | 2015-09-15 | 2015-12-23 | 蚌埠冠宜型材科技有限公司 | Molding sand for casting |
| CN105414461A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand |
| CN105436394A (en) * | 2015-11-25 | 2016-03-30 | 铜陵市经纬流体科技有限公司 | Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand |
| CN105414468A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability composite modified sodium silicate-bonded sand easy to strip for pump valve castings and preparation method of high-permeability composite modified sodium silicate-bonded sand |
| CN105414470A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Enhanced type composite modified sodium silicate sand for pump valve casting and preparing method thereof |
| CN105414463A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Heat-shock resistant efficient composite modified sodium silicate sand for pump valve casting and preparation method thereof |
| CN105414469A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Easily-demolding composite modified sodium silicate sand used for pump valve casting and preparing method thereof |
| CN105414467A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Composite modified sodium silicate-bonded sand fast to solidify for pump valve castings and preparation method of composite modified sodium silicate-bonded sand |
| CN105414462A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-lubricating non-stick composite modified sodium silicate sand for pump valve casting and preparation method thereof |
| CN105436395A (en) * | 2015-11-25 | 2016-03-30 | 铜陵市经纬流体科技有限公司 | High-bonding-strength modified water glass sand for pump valve casting and manufacturing method of high-bonding-strength modified water glass sand |
| CN105414466A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | Composite modified sodium silicate-bonded sand easy to shape and scatter for pump valve castings and preparation method of composite modified sodium silicate-bonded sand |
| CN105921681A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for small steel castings and preparing method thereof |
| CN105921680A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand for casting gray cast iron flywheel and preparing method thereof |
| CN107214291A (en) * | 2017-04-18 | 2017-09-29 | 芜湖市和蓄机械股份有限公司 | A kind of high temperature resistant, casting sand of high intensity and preparation method thereof |
| CN116117071A (en) * | 2022-12-27 | 2023-05-16 | 安徽华聚新材料有限公司 | Molding sand capable of preventing air holes from being formed and preparation method thereof |
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Application publication date: 20140219 |